Describe data structures used during passes of assembler, Computer Engineering

Assignment Help:

Describe Data structures used during passes of assembler and their use.

During passes of assembler, the Data structures define as:

Pass 1 data base

Input source program
A location counters (LC)
A machine-operation table (i.e. MOT), which indicates the symbolic mnemonic for each instruction and instruction's length.
Pseudo- operation table
Symbol table
Literal table
Copy of the input to be used later through pass 2

Pass 2

Coping of source program input to pass 1
Location counter (LC)
MOT
POT
ST
Base table which indicates that registers are currently identified as base register.
A work space, INST, which used to hold instruction as its different parts are being assembled together
Punch line, utilized to produce a printed listing.
Punch card used for converting assembled instructions in the format required by the loader.

Related Discussions:- Describe data structures used during passes of assembler

What do you mean by information system, Q. What do you mean by Information ...

Q. What do you mean by Information System? An information system is an planned combination of hardware, people, communication networks, software and data resources that transfo

Cut-off search - artificial intelligence, Cut-off Search: By using a m...

Cut-off Search: By using a minimax search, all we have to do is program, in a game playing situation our agent to look at the whole search tree from the current state of the

For what an append query be used, For what an append query be used? It ...

For what an append query be used? It is simple to append records from one table to another using an append query. There is no requirement for the tables to have the similar num

Example on plane, Q. If a plane is in the air also there is a fly flying in...

Q. If a plane is in the air also there is a fly flying inside the plane does the plane get heavier when the fly lands? Answer:- It is true that a fly puts weight on a plan

Use of hypertext links in internet access, Use of Hypertext links in Intern...

Use of Hypertext links in Internet access From the user's point of view, the Web having of a vast, worldwide collection of documents i.e. pages. Every page may have links (poin

Determine maximum possible time of 4-bit synchronous counter, A 4-bit synch...

A 4-bit synchronous counter uses flip-flops with propagation delay times of 15 ns each. The maximum possible time required for change of state will be ? Ans. 15 ns since in sy

Compute the positive integer and square root, Question: Q1) Write a cod...

Question: Q1) Write a code that asks the user for a positive integer, computes the square root of that integer, and return the result to the user. The computational error needs

Explain bitwise operator, Bitwise Operators Like other operators bit...

Bitwise Operators Like other operators bitwise operators have rules of precedence and associativity that determine how expressions involved them are evaluated.

What is time slicing, What is time slicing? With this technique each pr...

What is time slicing? With this technique each program runs for a short period known as a time slice, and then another program runs for its time slice and so on.

Explain the term electronic data interchange (edi), Explain the term Electr...

Explain the term Electronic Data Interchange (EDI). Electronic Data Interchange (EDI) may be generally easy to understand as the replacement of paper-based purchase orders alon

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages